Binding post



oscar. A. SMITH, or CLEVELAND, omo, AssIGNon or ONE-HALF To .WILLIA 3,

MITCHELL, or CLEVELAND, omo. Y

. Bmnme Pos1'.

Application led August 2, 1919. Serial No. $141,884..-`

To aZZ whom t may Concern: Be it known that I, OSCAR A. SMITH, a citizenof the United States, residing at Cleveland, in the county of Cuyahogaand lState of Ohio, have invented -certain new and useful Improvementsin'Binding Posts,

l of which .the following is a specification.

'This invention relates to binding posts, by means of which anelectrical conductor or wire may beattached to one of the elementstrates the stock out to the proper length;'

Fig. 2 illustrates one end thereof threaded' Fig. 3 shows the'post withawasher slipped over the smooth portion of the 'post and up against thethreads which act as a shoulder;

Figs. et, 5 and 7 illustrate the'several stepsl inthe making of the postshown in Figs. 6

y and 8 which latter figure illustrates the complete post with theprojections in position to hold the binding post in the carbon againstrotation. In Fig. 6 the post is shown inserted into one end of thecarbon rod and Fig. 9 is a detail view of the washer which may be used.

Similar characters of reference indicate corresponding parts in theseveral figures of the drawings.

In the binding post shown inthe patent to E. C. Henn, No. 813,093,February 20, 1903, the post is p-rovided with a series of longitudinallyextending ribs disposed parallel with the axis of the shank land locatedin juxtaposition around the post, and as I had considerable to do withthe making of devices in accordance with this patent, great vdifficultywas experienced in fitting these binding posts into the Carbon withoutspiltting it as they were driven thereinto. Owing to the number'of ribsin this Henn binding post considerable pressure was required to forcethe post into the carbon which frequently split it, and if ahole wasdrilled sufciently large to prevent the spliting of the carbon itprevented the binding post from Specification of Letters Patent.

illustrated inFig. 1 by a cuttinlgl Patented une 27, i922.

being ri 'dly held in 1t woul turn with t e terminal nut when rotated ortightened.

The present improved binding ost cannot only be made much lessexpenslvely, but

-a great saving in the amount of brass required in themanufacture of thepost, for

' in the present improvement the stock can be cut offto the requiredlength and size as.

off machine for the rolllng of the thread. he rolling'of thls threadleaves a shoulder back of the. thread, against which a punched washercan be located. The post is then placed*'fin a punch pressprovided withsuitable dies by means of whlch one or more, usually two or three' halfcircular tins or projections, are forsnled on the cylindrical portions fthe po The dies shown in Fig. 4 comprise a pair of members 2 and 3, eaehhaving a isemi-cir-v cular recess therein, as 4, forming when the twomembers are brought together a cylinducal openingcorresponding-throughout the major part of the length yof the plain partof the stock to the .diameter of the stock of the blnding post. At thezones where the fins or projections are to be formed about l180" of thiscylindrical opening corresponds staresA Parenti-ortica..

lace and consequently radius as partly shown by dotted lines a y Figs.4, 5 and 7. The die 'members are provlded, one-with a projection 5 andthe other .with a semi-circular recess 6 at one side 'but spaced apart.In the-form of binding post shown in Fig. 8 the die is provided withthree of these projections and likewise three mating recesses, two atone side of the die members and one at the opposite side inalternationwhereby two fins would be formed at one side of the stock andone at i' the other.

In making these improved binding posts, the stock 7 Aafter being rstsuitably cut to the desired len h is then rolled to have its thread 8place therein after which a suit-` able punched washer 9 is placed onthe post and then the plain or smooth portion of the post is placedbetween the die members,

-ywhich are then brought together by'tlie brass l sure is caused to toform the fins 10 or 10 and 11 accbrdin'g to the desired number of finsthat are to be provided.

As the die members 2 and 3 are brought together each built out portion aand proj ection 5 will force a portion of the metal of the stock; (seeFigs. 5 and 6) into the recess 6 and thus form a semi-circular lin orprojection as 10 or 11.

Owingl to the shape of projection 5 which of course may be 'of variousshapes the fins 10 and 11 are shown semi-:circular in form and it willbe observed that they are obtained by utilizing a portion of the metalof the stock which under presgradually flow, as 1t were, into the recess6.

ln the form shown in Fig. 6 as hereinbefore stated two of the ins arelocated on one tangent of the stock, while in the form shown in Fig. 8two of the fins are located on one tangent while an alternatmg fin 1slocated on the opposite tangent of the stock. Either form has been foundsuccessful in practice and found to be sufficient to hold the post inthe carbon and to prevent the turning'of the binding post when placed inthe carbon.

Furthermore, the formation of the binding post in the manner describedprevents the splitting of the carbon when the post is forced into thedrilled hole thereof, especially since the fins are so located away fromthe end of thev post which permits the latter 'to project quite adistance into the carbon before the fins are brought into engagementwith such carbon, and especially because the' location of the finsrelatively far apart does not in forcing the post into the carbon causepressure on all parts of the carbon at the same time. l

rlhe projections 5 may be formed by suitable steel hardened circularpins rigidly secured in openings of the die whereby the pins arerenewable and replaceable.

rlhe various details may be more or less changed without departing fromthe spirit or scope-of the present improvement.

I claim as my invention:

l. A binding post having a threaded portion, a plain portion, and one ormore semicircular fins spaced from the ends of said plain portion. 1

2. A-binding post having a pair of semicircular fins spaced apart at oneside of said post. y

3. A binding post having a plurality of lengthwise spaced apart fins atone side ofY said post. Y

4. A binding post having a plain portion, a threaded end, a washertherebetween, and a plurality of lengthwise spaced-apart vthe recess 6andreservo alined fins at one side of the plain portion of said post.

5. A binding posthaving a plurality of lengthwise spaced apart fins atone side of said post, and a fin at the opposite side thereof.

6. A bindin posthaving a plurality of spaced apart ns at one side ofsaid post, and a fin at the opposite side thereof.

7. A binding post having at .opposite sides a plurality of spaced apartfins.

8. A blnding post having at opposite sides a plurality of spaced apartfins, semi-circular in form.

9. A binding post having' at the side thereof a plurality of alinedspaced apart fins.

' 10. A binding post having at one or more sides thereof a plurality ofspaced apart tins,

portion, and a smooth portion, said smooth portion havinga plurality ofstaggered fins.

13. A binding post having a threaded portion, and a smooth portion, saidsmooth portion having a plurality of staggered fins semi-circular information.

14. A battery cell element consisting of a rod of non-metallic substancehaving a'bore in its outer end portion, a binding post adapted to beforced thereinto and having a projecting end provided with conductorattaching means and having the end projecting into said rod providedwith one or more semi-circular fins spaced from the inner'end of saidrod. i

15. A battery cell element consisting of a rod of non-metallic substancehaving'a bore in its outer end portion, a binding post adapted to beforced thereinto-and having a projecting end provided with a conductorattaching means and having the end rojecting into said rod provided witha p urality of'lengthwise spaced-apart alined fins at one side of saidpost.

16. A battery cell element consisting of a rod of non-metallic substancehaving a bore in its outer end portion, a binding post adapted to beforced thereinto and having a projecting end provided with conductorattaching means and having the end projecting into said rod providedwith a plurality of staggered fins.

Signed at Cleveland, county of Cuyahoga and State of 0hio,

@SCAR A. SMITH.

